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authorDavid Chinner <dgc@sgi.com>2008-04-10 12:24:24 +1000
committerLachlan McIlroy <lachlan@redback.melbourne.sgi.com>2008-04-18 12:02:10 +1000
commit234f56aca20a4f66b6ba3d3bf2787634dd9e0999 (patch)
tree5830e04df2a24cf988ad22abe960fd45fb8a5850
parent78e9da77f1bf265fe750b9223ec15707473fb6e8 (diff)
downloadop-kernel-dev-234f56aca20a4f66b6ba3d3bf2787634dd9e0999.zip
op-kernel-dev-234f56aca20a4f66b6ba3d3bf2787634dd9e0999.tar.gz
[XFS] Check for errors when changing buffer pointers.
xfs_buf_associate_memory() can fail, but the return is never checked. Propagate the error through XFS_BUF_SET_PTR() so that failures are detected. SGI-PV: 980084 SGI-Modid: xfs-linux-melb:xfs-kern:30831a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Niv Sardi <xaiki@sgi.com> Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
-rw-r--r--fs/xfs/xfs_log_recover.c35
1 files changed, 24 insertions, 11 deletions
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index a803943..e65ab4a 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -1162,10 +1162,14 @@ xlog_write_log_records(
if (j == 0 && (start_block + endcount > ealign)) {
offset = XFS_BUF_PTR(bp);
balign = BBTOB(ealign - start_block);
- XFS_BUF_SET_PTR(bp, offset + balign, BBTOB(sectbb));
- if ((error = xlog_bread(log, ealign, sectbb, bp)))
+ error = XFS_BUF_SET_PTR(bp, offset + balign,
+ BBTOB(sectbb));
+ if (!error)
+ error = xlog_bread(log, ealign, sectbb, bp);
+ if (!error)
+ error = XFS_BUF_SET_PTR(bp, offset, bufblks);
+ if (error)
break;
- XFS_BUF_SET_PTR(bp, offset, bufblks);
}
offset = xlog_align(log, start_block, endcount, bp);
@@ -3630,15 +3634,19 @@ xlog_do_recovery_pass(
* _first_, then the log start (LR header end)
* - order is important.
*/
+ wrapped_hblks = hblks - split_hblks;
bufaddr = XFS_BUF_PTR(hbp);
- XFS_BUF_SET_PTR(hbp,
+ error = XFS_BUF_SET_PTR(hbp,
bufaddr + BBTOB(split_hblks),
BBTOB(hblks - split_hblks));
- wrapped_hblks = hblks - split_hblks;
- error = xlog_bread(log, 0, wrapped_hblks, hbp);
+ if (!error)
+ error = xlog_bread(log, 0,
+ wrapped_hblks, hbp);
+ if (!error)
+ error = XFS_BUF_SET_PTR(hbp, bufaddr,
+ BBTOB(hblks));
if (error)
goto bread_err2;
- XFS_BUF_SET_PTR(hbp, bufaddr, BBTOB(hblks));
if (!offset)
offset = xlog_align(log, 0,
wrapped_hblks, hbp);
@@ -3690,13 +3698,18 @@ xlog_do_recovery_pass(
* - order is important.
*/
bufaddr = XFS_BUF_PTR(dbp);
- XFS_BUF_SET_PTR(dbp,
+ error = XFS_BUF_SET_PTR(dbp,
bufaddr + BBTOB(split_bblks),
BBTOB(bblks - split_bblks));
- if ((error = xlog_bread(log, wrapped_hblks,
- bblks - split_bblks, dbp)))
+ if (!error)
+ error = xlog_bread(log, wrapped_hblks,
+ bblks - split_bblks,
+ dbp);
+ if (!error)
+ error = XFS_BUF_SET_PTR(dbp, bufaddr,
+ h_size);
+ if (error)
goto bread_err2;
- XFS_BUF_SET_PTR(dbp, bufaddr, h_size);
if (!offset)
offset = xlog_align(log, wrapped_hblks,
bblks - split_bblks, dbp);
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